<!DOCTYPE html>
<html lang="zh-CN">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <!-- 上述3个meta标签*必须*放在最前面，任何其他内容都*必须*跟随其后！ -->
    <title>叶琪 101 Template</title>

    <!-- Bootstrap -->
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css" rel="stylesheet">

    <!-- HTML5 shim 和 Respond.js 是为了让 IE8 支持 HTML5 元素和媒体查询（media queries）功能 -->
    <!-- 警告：通过 file:// 协议（就是直接将 html 页面拖拽到浏览器中）访问页面时 Respond.js 不起作用 -->
    <!--[if lt IE 9]>
      <script src="https://cdn.jsdelivr.net/npm/html5shiv@3.7.3/dist/html5shiv.min.js"></script>
      <script src="https://cdn.jsdelivr.net/npm/respond.js@1.4.2/dest/respond.min.js"></script>
    <![endif]-->
  </head>
  <body>
   <!-- 折叠菜单 -->
   <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbar" aria-expanded="true" aria-controls="navbar">
    <span class="sr-only">Toggle navigation</span>
    <span class="icon-bar"></span>
    <span class="icon-bar"></span>
    <span class="icon-bar"></span>
  </button>
  <!-- 提交按钮 -->
  <button type="submit" class="btn btn-success">Sign in</button>
  <!-- 大按钮 -->
  <button type="button" class="btn btn-primary btn-lg">大按钮</button>
  <button type="button" class="btn btn-default btn-lg">大按钮</button>
  <!-- 默认按钮 -->
  <button type="button" class="btn btn-primary">默认</button>
  <button type="button" class="btn btn-default">默认</button>


  <button type="submit" class="btn btn-default">首页default</button>
  <button type="submit" class="btn btn-primary">首页primary</button>
  <button type="submit" class="btn btn-success">首页success</button>
  <button type="submit" class="btn btn-info">首页info</button>
  <button type="submit" class="btn btn-warning btn-sm" >首页warning</button>
  <button type="submit" class="btn btn-danger btn-sm">首页danger</button>
  <button type="submit" class="btn btn-link">首页link</button>

    <!-- jQuery (Bootstrap 的所有 JavaScript 插件都依赖 jQuery，所以必须放在前边) -->
    <script src="https://cdn.jsdelivr.net/npm/jquery@1.12.4/dist/jquery.min.js"></script>
    <!-- 加载 Bootstrap 的所有 JavaScript 插件。你也可以根据需要只加载单个插件。 -->
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/js/bootstrap.min.js"></script>
  </body>
</html>